Merge pull request #71 from SpringRoll/release/3.3.0

update changelog

Author: 902seanryan

CHANGELOG.md

@@ -5,7 +5,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [3.3.0] - unreleased
+## [3.3.0] - 2021-06-02
 
 ## Fixed